The Solar Step
Must 3600VA / 3600W 24V MPPT 100A Hybrid Solar Inverter Pure Sine Wave
Must 3600VA / 3600W 24V MPPT 100A Hybrid Solar Inverter Pure Sine Wave
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Must 3.6kW 100A 24V MPPT Solar Hybrid Inverter – PV1800 ECO
Reliable Off-Grid & Hybrid Power Solution
The Must PV1800 ECO 3.6kW Hybrid Inverter is a versatile, multi-function power system that integrates an inverter, MPPT solar charge controller, and battery charger into a compact unit. Designed for off-grid and hybrid applications, it ensures uninterrupted power supply by intelligently managing solar energy, AC utility, and battery storage.
With a high PV input voltage capacity (up to 400V/450V/500V), this inverter maximizes solar energy utilization and can even operate without a battery, making it a flexible and cost-effective energy solution.
Key Features:
- Pure Sine Wave Output: Delivers stable, high-quality power for sensitive electronics.
- Smart LCD Display: Allows easy configuration of working modes, charge current, and voltage settings.
- Built-in MPPT Solar Charge Controller: Maximizes solar power conversion efficiency.
- Wide PV Input Voltage Range: Supports higher solar voltage for increased flexibility.
- Battery-Free Operation: Can supply power to connected loads directly from solar panels.
- Smart Load Management: Dual output system for prioritizing critical loads.
- Advanced Protection: Overload, short circuit, and deep discharge protection.
- Cold Start Function: Allows startup without grid power.
- Remote Monitoring: Supports RS485 and CAN communication for lithium battery integration.
Technical Specifications:
Inverter Mode:
- Rated Power (Main + Second Load): 3600VA / 3600W
- DC Input Voltage: 24VDC, 135A
- AC Output Voltage: 230VAC, 50/60Hz, 15.7A
- Power Factor: 1.0
AC Charger Mode:
- AC Input Voltage: 230VAC, 50/60Hz, 17.7A
- DC Output Voltage: 24VDC, 60A
Solar Charger Mode:
- Maximum MPPT Charge Current: 100A
- MPPT Voltage Range (Typical): 30-320VDC
- Maximum PV Input Voltage (VOC): 400VDC
- Maximum PV Input Current: 18A
- Maximum MPPT Power: 4000W
- Maximum Charge Current: 100A
What’s in the Box:
- 1 × Must 3.6kW 24V MPPT Hybrid Inverter
- 1 × User Manual
Warranty:
- 1-Year Manufacturer Warranty
Installation & Warranty Requirements:
- Professional Installation Required: Must be installed by a qualified electrical wireman or master electrician registered with the Department of Labour.
- Compliance Certification: A valid Certificate of Compliance (COC) must be issued upon installation.
- Warranty Conditions: Warranty claims require installation photos, a valid COC, and proof of installation by a qualified professional. Claims without these documents may be rejected.
This high-efficiency hybrid inverter is an ideal choice for those looking for a reliable, scalable, and smart solar power solution.
Let customers speak for us
from 181 reviewsEXCELLENT SERVICE
Great service 👏 thank you
I recently purchased an inverter from The Solar Step, and I couldn’t be more impressed with the experience. I placed my order on Monday, and it was delivered to Pietermaritzburg by Wednesday—incredible turnaround time!
A special shoutout to Kersh, who kept me updated every step of the way. Her expert product knowledge was top-tier, and she went above and beyond by referring me to a dedicated technician who helped verify the exact battery and inverter compatibility before setup.
Top-notch communication, lightning-fast delivery, and genuine customer care. I highly recommend The Solar Step to anyone looking for reliable solar products and expert advice!
great I'm super happy
Order from the page easy,. The delivery was fast as delivery person keep you informed. The indicator installment the next day, easy to install and lights are very clear to from s distance. Thank you for fast respond and delivery and a exalted product
Happy client
Great product , great service and fast delivery
If you contact the shop, there is always someone answering the call, very friendly, helpful, and professional.
Quote recceive, money paid, was delevered on time...
Great deal ,Great stuff members,
Product was available immediately for pick- up. Will definitely use them again. Pricing was also good.
Bateries are working good and was delivered as promissed on time to western cape rural area. Thank you.
The staff is very professional and very knowledgeable about their products. The purchase was easy and very quick. I purchased a Lithium battery for my 3 head camera and it's been on ever since especially when there is no sun. I am very happy with my purchase.
I will always prefer solar step, I have ordered solar and they have arrived quickly and they’re working properly. I will always recommend solar step to everyone and hoping to call again soon
Great service. The product itself is quite fancy with lots of options to select. I am very impressed. Money well spent

Thus far ,this inverter is one of the better ones available,I had an Ohai 4 kKw for two weeks blew IGBT's and very noisy on Rf spectrum,this Must inverter is silent not a lot of fan noise and just great quality all round,very pleased with it
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